Athanasios D. Gouliamos, MD, PhD is Professor of Radiology at the National and Kapodistrian University of Athens Medical School. He is also Chairman of the 1st Radiology Department at the Aretaieion Hospital (University of Athens, Greece). John Andreou, PhD is Director of the Radiologic Imaging Department at the “Hygeia” Hospital, Athens, Greece. Paris A. Kosmides, MD is Director of the Medical Oncology Department at the “Hygeia” Hospital, Athens, Greece. Dionysios Voros, MD, is Professor of Surgery at the National and Kapodistrian University of Athens. He is also Director of the 2nd Surgery Clinic, “Aretaieion” Hospital, Athens, Greece